And now the New York Yankees will join that group after announcing that metal detectors will be in place and operating at select Yankee Stadium entrances starting on Tuesday. Many teams have been slowly implementing metal detectors this season, including … (more)the Minnesota Twins, who hosted the All-Star game, and the Seattle Mariners, who had them ready for their team's fanfest in January. Increased security is something the league is taking very seriously, and though MLB has never encountered a serious threat that would have been prevented by a metal detector, it's not difficult to argue with their logic. “Nothing is more important to us at Yankee Stadium than the safety of the fans we serve,” Yankees Chief operating officer Lonn Trost said in a statement. On the other side of the coin, there are concerns that adding these security measures will create longer lines entering the ballpark and a headache for fans in terms of planning their travel.